How many times have you said “Just a moment” and then got badgered for taking more than a second or two? Now you can fight back against this injustice. A moment is a medieval unit of time equal to a minute and a half or 90 seconds. In modern times it is a little more ambiguous.
John of Trevisa used the term “moment” in 1398 writing that there were 40 moments in an hour. Even with this information, you probably can’t actually redeem yourself for taking very long, because as with all words, ‘moment’ has evolved with time and currently means a much shorter amount of time than 90 seconds.
The 90 second meaning is pretty archaic and outdated. It might work as an argument in a pinch, though. It’s worth a shot.